Results 1 to 10 of about 178,751,683 (260)

A model for crystallography engagement with children in early elementary school with activities and book development [PDF]

open access: yesActa Crystallographica Section E: Crystallographic Communications
A crystallography educational outreach activity was developed and implemented in the US kindergarten level (K) (5–6 years old), which included writing and illustrating a new children's book about crystallography titled, X-ray Crystallography Adventures ...
Zoe Y. Marr   +2 more
doaj   +2 more sources

Influence of modification of the cast metal structure by solid phase particles on the nucleation of crystallization centers and their stability [PDF]

open access: yesҚарағанды университетінің хабаршысы. Физика сериясы, 2022
The inoculation method has wide possibilities for improving the mechanical and operational properties of cast metal, which makes it possible to create artificial centers of crystallization due to the direct introduction of dispersed refractory particles
Е.Н. Еремин
doaj   +2 more sources

Nanomodification is an effective methodfor forming the structure of the weld metal. Part II. [PDF]

open access: yesНанотехнологии в строительстве, 2020
The short-term existence of the melt in the weld pool and its overheating, a large temperature gradient near the interface and two-dimensional crystallization centers, in the form of fused grains at the weld pool boundary, reduce the probability and rate
Sizintsev Sergey Valerievich   +3 more
doaj   +1 more source

Formation of sucrose crystallization centers and their growth in a vacuum apparatus

open access: yesBIO Web of Conferences, 2021
The article considers sucrose crystallization as a mass transfer process, which is a phase transition from a liquid phase to a solid phase, and includes two main stages: the formation of crystallization centers and the growth of crystals to the desired ...
Slavyanskiy Anatoliy   +2 more
doaj   +1 more source

Influence Intensive Plastic Deformation on Phase Formation Process in Amorphous Alloys [PDF]

open access: yesЖурнал нано- та електронної фізики, 2016
The influence of intensive plastic deformation on structure and properties of amorphous alloys were investigated experimentally. Using highly sensitive dilatometer techniques shown that intensive plastic deformation of amorphous alloys leads to increased
V.I. Lysov   +3 more
doaj   +1 more source

Crystallization behavior and morphological features of ethylene-vinyl alcohol 44 copolymer

open access: yeseXPRESS Polymer Letters, 2022
This work is a first attempt to study the crystallization behavior of ethylene-vinyl alcohol copolymer with 44 mol% of ethylene units (EVOH44) and to observe the supermolecular structures developed during its crystallization.
Clement Freymond   +6 more
doaj   +1 more source

ALUMINIUM BRONZE. NANOSTRUCTURAL PROCESSES OF MELTING AND MOULDING

open access: yesЛитьë и металлургия, 2018
It is shown that melting and molding of aluminum bronze are difficult physical and chemical processes. In them the major role is played by the centers of crystallization of dendrites of a a-phase, the a-phase nanocrystals dissolved and the adsorbed ...
E. I. Marukovich, V. Yu. Stetsenko
doaj   +1 more source

Nanostructural crystallization of metals

open access: yesЛитьë и металлургия, 2021
Based on thermodynamic calculations, it is shown that metal crystallization is an equilibrium nanostructural process. At the beginning, trigonal or tetragonal structure-forming nanocrystals are formed from elementary nanocrystals.
E. I. Marukovich   +2 more
doaj   +1 more source

Surface Crystallization of Aqueous Salt Solution Under Overheating and Overcooling

open access: yesMATEC Web of Conferences, 2016
The investigation of the surface crystallization with low negative and high positive temperatures were carried in the paper. Crystallization curves for distillate (Ts0 = −9 °C) and different mass salt concentrations NaCl (Ts0 = 80 °C) were obtained ...
Nakoryakov Vladimir   +2 more
doaj   +1 more source

Crystallization features of casting alloys

open access: yesЛитьë и металлургия, 2023
It has been shown that elementary crystal lattices of basic phases and oxides of casting alloys do not satisfy the principle of structural and dimensional correspondence.
E. I. Marukovich   +2 more
doaj   +1 more source

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